Combination guard and heat transfer device



Jan 2, 1934.

c. w. HARTWIG- 1,942,211

COMBINATION GUARD AND HEAT TRANSFER DEVICE Filed April 20, 1933 2 I -v INVENIOR.

ATTORNEY.

Patented 1934 1,942,211.

UNITED STATES PATENT QFFICE oomsma'rron GUARD m nm'r TRANSFER DEVICE Charles W. Hal-twig, Hastings-on-Hudson, N. Y. Application April 20, 1933. Serial No. 688,953

6 Claims. (01. 257-262) This invention relates to a combination guard that various other changes may be made in the and heat radiator for use on a heated pipe of a construction and arrangement without departhouse-heating system, or the like. ing from the spirit of the invention, and there- It is. an object of the invention to provide a fore the invention is not limited to that which simple and inexpensive device capable of being is described in the specification and shown in the g snapped on or off a pipe, for providing additional drawing, but only as indicated in the appended heating surface and for preventing physical inclaims. jury to a person com-'ng in contact with the same. What is claimed is: v

other objects and advantages will be apparent 1. A combination guard and heat transfer de- 10 from the following description taken in connecvice adapted to be applied upon a pipe and com- 55 tion with the accompanying drawing, wherein prising a curved inner plate for directly conform- Fig.1isa perspective illustrating one applicaing to and engaging said pipe, and a second tion of the invention, and curved plate fitted to the first plate and having Fig. 2 is a top plan view. I its ends interlocked therewith to form a unitary Referring to the drawing, a pipe 10 is adapted structure, said cooperating sections being of a 70 to have hot water, steam, or other fluid, either size to snap on a pipe, said outer section having hot or cold pass therethrough, such pipe forma plurality of outwardly extending folds of a uniing a part of a heating or refrigerating system. form size, and providing longitudinal air pas- In small rooms, such as bath rooms and the like, sages and increased heat transfer surface, the pipes extend through the room and such pipes outer portions of said folds being flat and form- 75 are relied upon for heating the room without the ing a substantially annular guard. ordinary type of radiator. These pipes are oft- 2. A combination guard and heat transfer detimes quite hot and cause painful burns to pervice adapted to be applied upon a pipe and comsons using such room when they accidentally come prising a curved inner plate for directly conformin contact with such pipes. Further the rooms ing to and engaging said pipe, anda second curved 90 are inadequately heated due to the small amount plate fitted to the first plate and having its ends of heat-radiating surface. In order to overcome interlocked therewith to form a unitary structhese objectionable features, the pipe 10 is-proture, said cooperating sections being of a size to vided with a number of heat-radiating fins 11 snap on a pipe. I

formed by a copper sheet bent to produce undula- 3. A combination guard and heat transfer de- 85 tions or corrugations having fiat sides connected vice adapted to be applied upon a pipe and comat their inner and outer edges by means of subprising a cylindrically curved plate adapted to stantially right angle bends, the inner group of snugly engage a pipe upon which the device is apwhich lie flat against a curved cooperating plate plied, and a cooperating corrugated member 1 12 as shown. snugly engaging the cylindrical plate and having 90 The above described construction is of such its ends interlocked therewith.

a character that it is flexible, and the inner plate 4. A combination guard and heat transfer deforms substantially two-thirds of a cylinder so vice adapted to be applied upon a pipe and comthat the heat-radiating fin assembly can be easiprising a plate for directly conforming to and ly snapped onto the pipe 10, or removed thereengaging said pipe, and a second plate fitted to 95 from. As shown the lateral extremities of the the first plate and having its ends interlocked corrugated outer fin member and the curved intherewith to form a unitary structure made up of I ner fin member are bent around to form coopcooperating sections, said cooperating sections erating loops 13 and 14 respectively, permitting being of a size to snap'on a pipe, said second plate f the cooperating fin members to be moved endhaving a plurality of outwardly extending folds. 100

wise relative to each other in order to separate 5. A combination guard and heat transfer dethem or assemble them. vice constructed for application upon a pipe for Although for purpose of illustration only a providing heat transfer and comprising a memshort section of a fin assembly is shown, it is inher for directly engaging the pipe uponwhich 5o tended that the fin assembly be produced in the device is to be applied, and a second member 5 I lengths of any desired size depending upon the cooperatively associated with the first member various factors of place and use. and having portions in intimate heat exchange The fins may be perforated especially where relation with the first member and having other the device is desired to be used only as a guard. portions folded outwardly to provide increased It will be apparent to those skilled ingthe art heat exchange surface, said members being asno transfer by conduction between the pipe and body, said body having outwardly extending folds to provide increased heat exchange surface, and also being constructed to snap on and clamp onto a pipe.

CHARLES W. HARTWIG. 

